Hose-coupling



(No Modeln.) 2 Sheets-Sheet l. E. P. WALLACE. HOSE GOUPLING.

No. 563,898. Patented July 14, 1896.

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(No Model.)

E. F; WALLACE.

. HOSE GOUPLING. No. 563,898. l Patented July 14,1896.

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jm@ @j UNITED STATES PATENT EETCE.

EMILUS FRANKLIN VALLACE, OF SYRAGUSE, NET YORK.

HOSE-COUPLING.

SPECIFICATION forming part of Letters Patent No. 563,898, dated July 14, 1896.

Serial No. 545,581. (No modeLl Application filed April 13, 1895- To @ZZ whom t may concern.-

Beit known that l, FMILUs FRANKLIN TAL- LACE, of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Hose-Couplings, of which the following', taken in connection with the accompanying drawings, is a full, clear, and exact description.

My invention relates to hose-couplings, and particularly to that class which are composed of two interlocking sections detachably connected together, and which are commonly used to connect the air-brake pipes between the cars of a railway-train.

Uy object is to provide each section of such a coupling With an automatic valve mechanism, which valves are normally held open when the sect-ions are coupled together for the free circulation of the air, and when intentionally or accidentally uncoupled will automatically close to prevent the loss of airpressure, so as t set the brakes.

My invention consists in the several novel features of construction and operation which are hereinafter described, and which are specifically set forth in the claim hereunto annexcd.

It is constructed as follows, reference bein g had to the accompanying drawings,in Which- Figure 1 is a side elevation of a coupling, showing the sections connected. Fig. 2 is a top plan of the saine. Fig. 3 is a side elevation of one of the sections with the plug removed to show the interior. Fig. 4 is a sectional elevation of the saine on the dotted line in Fig. 3, showing the valve closed. Fig. 5 is a like view showing the valve open. Fig. 6 is an elevation of the holder in which the valvestein is guided. Fig. 7 is a plan of the outer face of the same, showing the valve-stem guide and the slot opening into it.

As these sections are counterparts of each other, it will only be necessary to describe the construction of one section and their joint action when coupled.

The hollow body A, the cam-locking flange ct thereon, the cani-locking riin b thereon, the tubular shank c, the dischargebpening d, and packing e are, generally speaking, old and not a part of inyinvention and are of ordinary construction. The side of the body opposite to the discharge is cut out and threaded, and 2 is a closer or plug screwed thcreinto. A valveholder 3 is cast or secured within the body, .'substantiallf.7 as shown, comprising a stein il and a head 5, in which is a valve-stein seat U and a slot 7, opening into it. A suitable valve 8 is inserted into said body, with its stein J in the seat and 10 is an arln secured to said stern and tting freely in said slot '7. Alink 1l is connected to said arm and to a lug 12 upon the slide 13, which is inserted through the Wall of said body, with suitable packing, in order that it may be reciprccated therein, and upon its outer end is provided with a stud 1i, having Wedging faces. Upon the iiange ct an arm is cast or secured in such manner as to leave an annular recess 16 bctiveen its edge and the body A, and is provided With a slot 17 more or less like unto al cani. Then when the sections are coupled, the stud la enters the recess 10, the slide 13 will be forced in, and the valve raised, as in. Fig. 5, but when said stud enters the slot 17 then said slide is drawn out and the valve closed, as in Fig. a.

One Wallof the slot 17 is beveled or rounded off so that a point is created, the apex of which readily enters behind a pin 14, and then by its wedging or cani-like action this pin 14 is carried into the slot 17. The outer wall of the slot 16 is also beveled or rounded. outwardly, so that the point can readily be brought outside of the other pin la to Wedge it inwardly as it passes into the slot l f5. Thus in coupling cars the pin la upon the couplingsection, which is connected to the front end of the rear ear, is caused to enter the slot 1G of the other section, and the. pin 14 of the section upon the rear end of the front car is caused to enter the slot 17. These pins can be caught with the points or manipulated into proper position to enter said slots. Then. when the sections are accidentally unconpled, as when a 'train breaks in two and the sections are pulled by their angularity toward each other, the valve in the coupling-section which is upon the rear end of the forward car is closed to prevent loss of air-pressure, and the valve in the section which is connected to the 'front end of the rear car is left open in. order to permit free loss of air to quickly set the brakes and stop the rear section, While the brakes are not set upon the front section IOO IOV

until they are operated by the engineer. The valve of the rear section,y its pin being in slot 16, is in the position shown in Fig. 5, and remains open because the link 11 is then parallel to the stem 9, and eonsequently the pressure is exerted in the line of the length of both, and thus the valve cannot be closed. Then `the pin 14 enters the slot 17, the link 1l is Jthrown out of sueh parallelism just enough so that when it is released the pressure will elose the Valve. The lost motion in the operation of pulling the rod 13 outwardly permits considerable movement of the pin 14 before the link l1 is moved sufficiently to permit the pressure to Close the Valve. In other Words, Whenthe pin 14 is in the slot 17, the valve is at a point intermediate to the positions shown in Figs. 4 and 5, and the pin holds it there and prevents its being' closed until released, and it is through this lost motion that the pin 14 enters the slot 17 Without closing the Valve.

Having described my invention, what I claim, and desire to secure by Letters Patent,

In a hose-Coupling, the Combination with a coupling-section and a valve-seat therein, of a valve reoiproeatingly mounted therein, an arm upon the Valvestein, a slide in the eoupling-body, a link connecting` it to said arm whereby, When said slide is moved outwardly the Valve is closed and Whenfmoved inwardly it is opened. i

In witnesswhereof l have hereunto set my hand on this 5th day of April, 1895.

EMILUS FRANKLIN WALLACE.

In presence ofw JEssIE E. MURRAY, IIoWARD P. DENIsoN. 

